HGS-15 vs HGS-18
The HGS-18's low-frequency extension is 15 Hz against the HGS-15's 18 Hz and its woofer 18" against 15". Both share power @ 8ω (1.3kW) and high-frequency extension (120 Hz).
AI-generated product photo — not official manufacturer imagery.
Estimated price (community-sourced)
Around — community and catalog average, updates slowly
The Velodyne HGS-15 is a high-gain servo-controlled subwoofer featuring a 15-inch forward-firing woofer with a 12.7-inch piston diameter, tandem 3-inch push-pull voice coils, and a massive 380 oz (24 lbs) magnet structure. It is powered by a built-in Class D amplifier delivering 1250 watts RMS and 3000 watts peak power. The subwoofer incorporates an accelerometer-based servo control system for precise cone motion control, reducing distortion and improving accuracy. It offers adjustable low-pass crossover from 40 to 120 Hz, selectable high-pass crossover outputs at 80 or 100 Hz, and selectable subsonic filters at 15 or 35 Hz. Additional features include balanced XLR inputs, line-level RCA inputs and outputs, speaker-level inputs and outputs with 5-way binding posts, signal sensing auto on/off, variable volume control, and selectable phase control (0° or 180°). The frequency response is 18 Hz to 120 Hz ±3 dB, with harmonic distortion less than 0.5%. The enclosure is magnetically shielded for video use and has a compact footprint measuring approximately 17.5" x 18" x 20" and weighs about 80 lbs. This subwoofer is designed for both home theater and music applications, delivering deep, accurate bass with high output and low distortion.
Driver and acoustic performance characteristics
Amplification power output and characteristics
Driver configuration and enclosure design
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The HGS-18's low-frequency extension is 15 Hz against the HGS-15's 18 Hz and its woofer 18" against 15". Both share power @ 8ω (1.3kW) and high-frequency extension (120 Hz).
The DD-12's low-frequency extension is 17 Hz against the HGS-15's 18 Hz and its woofer 12" against 15". Both share power @ 8ω (1.3kW) and high-frequency extension (120 Hz).
The RS700-SB's power @ 8ω is 700W against the HGS-15's 1.3kW, its low-frequency extension 17 Hz against 18 Hz, its high-frequency extension 150 Hz against 120 Hz, and its woofer 12" against 15".
The Descend DN15's power @ 8ω is 500W against the HGS-15's 1.3kW, its low-frequency extension 20 Hz against 18 Hz, and its high-frequency extension 150 Hz against 120 Hz. Both share woofer (15").
HGS-18 MkII
Paradigm Servo 15 v2
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